Slide trolley



July 24, 1923.

1,462,771) P. SCHULTZ SLIDE TROLLEY Filed April 17 1922 Patented July 24, 1923..

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PAUL SCHULTZ, OF DES MOINES, IOWA.

SLIDE TROLLEY.

Application filed April 17, 1922. Serial No. 553,686.

To aZZ whom. it may concern:

Be it known that I, PAUL SCHULTZ, a citizen of the United States of America, and

resident of Des Moines, Polk County, Iowa, have invented a new and useful Slide Trolley. of which the following is a specification. The object of this invention is to provide an improved trolley device of the sliding type.

Av further object of this invention is to provide an improved trolley slide shoe which may vice is materially increased.

A further object of this invention is to provide an improved reversible trolley slide shoe adapted to remain normally in one position during forward movement of the vehiole on which it is used and to reverse automatically upon and during reverse movement of such vehicle, together withmean-s to limit rotary movement of the shoe.

A further object of this invention is to provide an improved double stop member adapted to limit rotary movement of a slide shoe to substantially one-half a revolution, so that said shoe may assume either of two positions indicated for forward or reverse movement of the vehicle on which it is used.

My invention consists in the construction,

so arrangement and combination of elements hereinafter set forth pointed out in my claims and illustrated by the accompanying drawing, in whichv Figure 1 is a side elevation illustrating my improved slide trolley, dotted lines indicating the position assumed by the shoe for reverse movement. rotary movement of the shoe being limited to a range between the two positions so shown. Figure 2 is a section on the line 22 of Figure 1, and Figure 3 is a section on the line 3-8 of Figure 1.

In the construction of the device as shown the numeral 10 designates the socket of a harp formed with spaced arms 11, 12, the socket being mounted on a pole 13, carried in turn by a trolley car or electric locomotive, not shown. A spindle 14 is mounted through and carried by the harp arms 11, 12 and a shoe 15, is mounted for oscillation on said spindle between saidarms. The shoe 15 is of elongated form and has a hub 16 between its ends but located nearer the rear than the forward end, the forward portion of said shoe being formed with a rela be reversed, whereby the life of the deused in forward travel;

tively large aperture 17, of greater width than the diameter of said hub, lying wholly between the front end of the shoe and the hub 16.: The shoe 15 is formed with a groove 18 adapted to engage a trolley wire (not shown), such groove extending around three sides of the shoe, that is to say the top, rear and bottom sides. The groove 18 at the top and bottom of the shoe is straight for a distance for extended. contact with a wire, such straight portions being connected by an arcuate portion at the rear of the shoe. The grooved top portion of the shoe is adapted for contact with a wireduring nor mal forward travel of the device, and in the event the direction of travel is reversed said shoe; automatically turns about a half revolution in the direction indicated by the arrow in Figure 1, whereby the grooved lower (asshown) portion thereof contacts with the wire, said wire contacting with the and ate rear portion of the shoe during such movement of reversal. In other words, that portion of the shoe having the large aperture 17 is always in advance of the spindle 14: regardless of the direction of travel of the vehicle. When the shoe has been in use for a time and its normal top portion becomes badly worn. it may be reversed by re moving it from the spindle and turning it top for bottom so that the portion formerly used in rearward travel only is thereafter thus materially lengthening the effective life of the shoe.

There is sometimes a tendency of the shoe to turn more than the half revolution required for its automatic reversal from the forward to rearward movement position above explained, as for instance when it encounters an obstruction on the trolley wire such as an overhead circuit breaker or a switch joint, and such excessive turning is liable to result in displacement of the shoe from the wire. To prevent this I have provided a double-stop device, composed of a tubular member or nut 19 mounted on and embracing one end portion of the hub 16 of the shoe. The tubular member or nut 19 is formed at its outer end with an integral extension or lug 20 substantially parallel with its axis and overlying and engaging the upperend of one of the harp arms, such as 11, whereby said tubular member or nut is prevented from turning and is held stationary relative to the harp. At its inner end the tubular member or nut is formed with circumferentially spaced stop shoulders .21, 22, which are spaced apart substantially 180 degrees on the circumference of the member, or a trifle more. The shoi1lder 21 is adapted to be engagedby a lug 23 formed on one side of the shoe 15, to limit I such rotation of the shoe as to allow it to pass from its normal position for forward travel, as shown bysolid-linesinFigure 1, to its position for rearward travel, as indi cated by dotted lines in said 'figure, and vice versa, orabout lSodegrees in either (ll; rection, I 1 a a .In order to provide stop iineans for engagement vwith theshoulders 21, 22 when theshoe has been reversed by turning top for bottom, as hereinbetore not-ed, a second lug 24 is formed on the/opposite ace thereof from the lug'23, said lug 24 beingsuitably spaced circum'ferentially from the "lug" 23 that it will occupy theproper position relative to said shoulders when such reversal is made That is,the lug 24: is as far below the longitudinal axis ofithe shoe asthe lug 23 is above it. i

. The device may if :desired, (be equipped with the usual trolley wheel springs, such 1. A slide trolley, comprlslng a'harp, an

elongated slide shoe mounted for oscillation therein, said shoe'being adapted to contact a wire on either of its long sides, and means to limit oscillation of said shoe.

2. A slide trolley, comprising a harp, a shoe mounted for oscillation therein, and means for limiting oscillation of said shoe to substantially a half revolution in either direction. a i

3. A slide trolley, comprising a harp, 'a slide shoe mounted for oscillation therein, a stopmember rigidly mounted and formed with a pairofspaced. stop shoulders, and a lug-formed on said shoe and adapted for engagement with said shoulders to limit os-' cillation ol'said shoe in either direction.

Al. Aslide trolley, comprising aharp, aspindle carried thereby, slide shoe formed with a hub ournaled on said spindle, anda tubular stop ,nuember :mounted on said. hub,

said stop member being formed with an ex- U tension engaging said harp to prevent rotation of said stop .member,.said stop member being formed with spaced stop shoulders, saidshoebeing formed-with (a lug adapted for vengageinent with said shoulders who a tively. A i

Signed at Des Moines v inthe county of Polk and State of Iowa, this 12th day of April, 1922. U

PAULMSCHULTZ. 

